I Need help choosing between Tevo Tornado and the TronXY X5SA

[curious aardvark]

not even relevant.
it's unlikely you will ever print at 0.05mm on an fdm machine.
Plus they're pretty much guessing anyway :-)

Most printers are 'technically' capable of 0.05 layers. They are all using the same motors. Stepper drivers make a difference, but the hardware is usually - technically - capable.
0.1 is doable, and as low as you're ever likely to want to go :-)

[David72]

I have ordered the X5SA, I had to do it fast because it's a chrismas gift for my son...at least that's what he thinks .

I saw that Nexi Tech printed a benchy at 50 microns layer height https://youtu.be/Pq3qjdaRnuY?t=660

Thx again Curious Aardvark, for your time and thoughts. I will try to share my build project on this forum and may have some more questions.